tool shifted from surface to airborne assets, iceberg marking remained an important facet of the 

 scientific benefit of the North Atlantic Ice Service (Figure 5). 



Figure 4. Ship-based iceberg marking. (Coast Guard Photograph) 



Figure 5. Air-deploy of iceberg marking dye from Coast Guard HC-130 aircraft. (Coast Guard Photograph) 



The scientific data available for iceberg tracking was further increased by remote 

 positioning technology currently including satellite positioning and communications technology. 

 The CALIB provides position data, via the Global Positioning System, and communicates its 

 position up to six times per day to a data collection system. 



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